2 * Copyright (c) 2016 Intel Corporation
4 * Permission to use, copy, modify, distribute, and sell this software and its
5 * documentation for any purpose is hereby granted without fee, provided that
6 * the above copyright notice appear in all copies and that both that copyright
7 * notice and this permission notice appear in supporting documentation, and
8 * that the name of the copyright holders not be used in advertising or
9 * publicity pertaining to distribution of the software without specific,
10 * written prior permission. The copyright holders make no representations
11 * about the suitability of this software for any purpose. It is provided "as
12 * is" without express or implied warranty.
14 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
15 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
16 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
17 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
18 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
19 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24 #include <drm/drm_connector.h>
25 #include <drm/drm_edid.h>
26 #include <drm/drm_encoder.h>
28 #include "drm_crtc_internal.h"
29 #include "drm_internal.h"
34 * In DRM connectors are the general abstraction for display sinks, and include
35 * als fixed panels or anything else that can display pixels in some form. As
36 * opposed to all other KMS objects representing hardware (like CRTC, encoder or
37 * plane abstractions) connectors can be hotplugged and unplugged at runtime.
38 * Hence they are reference-counted using drm_connector_get() and
39 * drm_connector_put().
41 * KMS driver must create, initialize, register and attach at a &struct
42 * drm_connector for each such sink. The instance is created as other KMS
43 * objects and initialized by setting the following fields. The connector is
44 * initialized with a call to drm_connector_init() with a pointer to the
45 * &struct drm_connector_funcs and a connector type, and then exposed to
46 * userspace with a call to drm_connector_register().
48 * Connectors must be attached to an encoder to be used. For devices that map
49 * connectors to encoders 1:1, the connector should be attached at
50 * initialization time with a call to drm_mode_connector_attach_encoder(). The
51 * driver must also set the &drm_connector.encoder field to point to the
54 * For connectors which are not fixed (like built-in panels) the driver needs to
55 * support hotplug notifications. The simplest way to do that is by using the
56 * probe helpers, see drm_kms_helper_poll_init() for connectors which don't have
57 * hardware support for hotplug interrupts. Connectors with hardware hotplug
58 * support can instead use e.g. drm_helper_hpd_irq_event().
61 struct drm_conn_prop_enum_list
{
68 * Connector and encoder types.
70 static struct drm_conn_prop_enum_list drm_connector_enum_list
[] = {
71 { DRM_MODE_CONNECTOR_Unknown
, "Unknown" },
72 { DRM_MODE_CONNECTOR_VGA
, "VGA" },
73 { DRM_MODE_CONNECTOR_DVII
, "DVI-I" },
74 { DRM_MODE_CONNECTOR_DVID
, "DVI-D" },
75 { DRM_MODE_CONNECTOR_DVIA
, "DVI-A" },
76 { DRM_MODE_CONNECTOR_Composite
, "Composite" },
77 { DRM_MODE_CONNECTOR_SVIDEO
, "SVIDEO" },
78 { DRM_MODE_CONNECTOR_LVDS
, "LVDS" },
79 { DRM_MODE_CONNECTOR_Component
, "Component" },
80 { DRM_MODE_CONNECTOR_9PinDIN
, "DIN" },
81 { DRM_MODE_CONNECTOR_DisplayPort
, "DP" },
82 { DRM_MODE_CONNECTOR_HDMIA
, "HDMI-A" },
83 { DRM_MODE_CONNECTOR_HDMIB
, "HDMI-B" },
84 { DRM_MODE_CONNECTOR_TV
, "TV" },
85 { DRM_MODE_CONNECTOR_eDP
, "eDP" },
86 { DRM_MODE_CONNECTOR_VIRTUAL
, "Virtual" },
87 { DRM_MODE_CONNECTOR_DSI
, "DSI" },
88 { DRM_MODE_CONNECTOR_DPI
, "DPI" },
91 void drm_connector_ida_init(void)
95 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
96 ida_init(&drm_connector_enum_list
[i
].ida
);
99 void drm_connector_ida_destroy(void)
103 for (i
= 0; i
< ARRAY_SIZE(drm_connector_enum_list
); i
++)
104 ida_destroy(&drm_connector_enum_list
[i
].ida
);
108 * drm_connector_get_cmdline_mode - reads the user's cmdline mode
109 * @connector: connector to quwery
111 * The kernel supports per-connector configuration of its consoles through
112 * use of the video= parameter. This function parses that option and
113 * extracts the user's specified mode (or enable/disable status) for a
114 * particular connector. This is typically only used during the early fbdev
117 static void drm_connector_get_cmdline_mode(struct drm_connector
*connector
)
119 struct drm_cmdline_mode
*mode
= &connector
->cmdline_mode
;
122 if (fb_get_options(connector
->name
, &option
))
125 if (!drm_mode_parse_command_line_for_connector(option
,
131 DRM_INFO("forcing %s connector %s\n", connector
->name
,
132 drm_get_connector_force_name(mode
->force
));
133 connector
->force
= mode
->force
;
136 DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
138 mode
->xres
, mode
->yres
,
139 mode
->refresh_specified
? mode
->refresh
: 60,
140 mode
->rb
? " reduced blanking" : "",
141 mode
->margins
? " with margins" : "",
142 mode
->interlace
? " interlaced" : "");
145 static void drm_connector_free(struct kref
*kref
)
147 struct drm_connector
*connector
=
148 container_of(kref
, struct drm_connector
, base
.refcount
);
149 struct drm_device
*dev
= connector
->dev
;
151 drm_mode_object_unregister(dev
, &connector
->base
);
152 connector
->funcs
->destroy(connector
);
155 void drm_connector_free_work_fn(struct work_struct
*work
)
157 struct drm_connector
*connector
, *n
;
158 struct drm_device
*dev
=
159 container_of(work
, struct drm_device
, mode_config
.connector_free_work
);
160 struct drm_mode_config
*config
= &dev
->mode_config
;
162 struct llist_node
*freed
;
164 spin_lock_irqsave(&config
->connector_list_lock
, flags
);
165 freed
= llist_del_all(&config
->connector_free_list
);
166 spin_unlock_irqrestore(&config
->connector_list_lock
, flags
);
168 llist_for_each_entry_safe(connector
, n
, freed
, free_node
) {
169 drm_mode_object_unregister(dev
, &connector
->base
);
170 connector
->funcs
->destroy(connector
);
175 * drm_connector_init - Init a preallocated connector
177 * @connector: the connector to init
178 * @funcs: callbacks for this connector
179 * @connector_type: user visible type of the connector
181 * Initialises a preallocated connector. Connectors should be
182 * subclassed as part of driver connector objects.
185 * Zero on success, error code on failure.
187 int drm_connector_init(struct drm_device
*dev
,
188 struct drm_connector
*connector
,
189 const struct drm_connector_funcs
*funcs
,
192 struct drm_mode_config
*config
= &dev
->mode_config
;
194 struct ida
*connector_ida
=
195 &drm_connector_enum_list
[connector_type
].ida
;
197 ret
= __drm_mode_object_add(dev
, &connector
->base
,
198 DRM_MODE_OBJECT_CONNECTOR
,
199 false, drm_connector_free
);
203 connector
->base
.properties
= &connector
->properties
;
204 connector
->dev
= dev
;
205 connector
->funcs
= funcs
;
207 ret
= ida_simple_get(&config
->connector_ida
, 0, 0, GFP_KERNEL
);
210 connector
->index
= ret
;
213 connector
->connector_type
= connector_type
;
214 connector
->connector_type_id
=
215 ida_simple_get(connector_ida
, 1, 0, GFP_KERNEL
);
216 if (connector
->connector_type_id
< 0) {
217 ret
= connector
->connector_type_id
;
221 kasprintf(GFP_KERNEL
, "%s-%d",
222 drm_connector_enum_list
[connector_type
].name
,
223 connector
->connector_type_id
);
224 if (!connector
->name
) {
226 goto out_put_type_id
;
229 INIT_LIST_HEAD(&connector
->probed_modes
);
230 INIT_LIST_HEAD(&connector
->modes
);
231 lockinit(&connector
->mutex
, "drmcm", 0, LK_CANRECURSE
);
232 connector
->edid_blob_ptr
= NULL
;
233 connector
->status
= connector_status_unknown
;
235 drm_connector_get_cmdline_mode(connector
);
237 /* We should add connectors at the end to avoid upsetting the connector
239 spin_lock_irq(&config
->connector_list_lock
);
240 list_add_tail(&connector
->head
, &config
->connector_list
);
241 config
->num_connector
++;
242 spin_unlock_irq(&config
->connector_list_lock
);
244 if (connector_type
!= DRM_MODE_CONNECTOR_VIRTUAL
)
245 drm_object_attach_property(&connector
->base
,
246 config
->edid_property
,
249 drm_object_attach_property(&connector
->base
,
250 config
->dpms_property
, 0);
252 drm_object_attach_property(&connector
->base
,
253 config
->link_status_property
,
256 drm_object_attach_property(&connector
->base
,
257 config
->non_desktop_property
,
260 if (drm_core_check_feature(dev
, DRIVER_ATOMIC
)) {
261 drm_object_attach_property(&connector
->base
, config
->prop_crtc_id
, 0);
264 connector
->debugfs_entry
= NULL
;
267 ida_simple_remove(connector_ida
, connector
->connector_type_id
);
270 ida_simple_remove(&config
->connector_ida
, connector
->index
);
273 drm_mode_object_unregister(dev
, &connector
->base
);
277 EXPORT_SYMBOL(drm_connector_init
);
280 * drm_mode_connector_attach_encoder - attach a connector to an encoder
281 * @connector: connector to attach
282 * @encoder: encoder to attach @connector to
284 * This function links up a connector to an encoder. Note that the routing
285 * restrictions between encoders and crtcs are exposed to userspace through the
286 * possible_clones and possible_crtcs bitmasks.
289 * Zero on success, negative errno on failure.
291 int drm_mode_connector_attach_encoder(struct drm_connector
*connector
,
292 struct drm_encoder
*encoder
)
297 * In the past, drivers have attempted to model the static association
298 * of connector to encoder in simple connector/encoder devices using a
299 * direct assignment of connector->encoder = encoder. This connection
300 * is a logical one and the responsibility of the core, so drivers are
301 * expected not to mess with this.
303 * Note that the error return should've been enough here, but a large
304 * majority of drivers ignores the return value, so add in a big WARN
305 * to get people's attention.
307 if (WARN_ON(connector
->encoder
))
310 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
311 if (connector
->encoder_ids
[i
] == 0) {
312 connector
->encoder_ids
[i
] = encoder
->base
.id
;
318 EXPORT_SYMBOL(drm_mode_connector_attach_encoder
);
320 static void drm_mode_remove(struct drm_connector
*connector
,
321 struct drm_display_mode
*mode
)
323 list_del(&mode
->head
);
324 drm_mode_destroy(connector
->dev
, mode
);
328 * drm_connector_cleanup - cleans up an initialised connector
329 * @connector: connector to cleanup
331 * Cleans up the connector but doesn't free the object.
333 void drm_connector_cleanup(struct drm_connector
*connector
)
335 struct drm_device
*dev
= connector
->dev
;
336 struct drm_display_mode
*mode
, *t
;
338 /* The connector should have been removed from userspace long before
339 * it is finally destroyed.
341 if (WARN_ON(connector
->registered
))
342 drm_connector_unregister(connector
);
344 if (connector
->tile_group
) {
345 drm_mode_put_tile_group(dev
, connector
->tile_group
);
346 connector
->tile_group
= NULL
;
349 list_for_each_entry_safe(mode
, t
, &connector
->probed_modes
, head
)
350 drm_mode_remove(connector
, mode
);
352 list_for_each_entry_safe(mode
, t
, &connector
->modes
, head
)
353 drm_mode_remove(connector
, mode
);
355 ida_simple_remove(&drm_connector_enum_list
[connector
->connector_type
].ida
,
356 connector
->connector_type_id
);
358 ida_simple_remove(&dev
->mode_config
.connector_ida
,
361 kfree(connector
->display_info
.bus_formats
);
362 drm_mode_object_unregister(dev
, &connector
->base
);
363 kfree(connector
->name
);
364 connector
->name
= NULL
;
365 spin_lock_irq(&dev
->mode_config
.connector_list_lock
);
366 list_del(&connector
->head
);
367 dev
->mode_config
.num_connector
--;
368 spin_unlock_irq(&dev
->mode_config
.connector_list_lock
);
370 WARN_ON(connector
->state
&& !connector
->funcs
->atomic_destroy_state
);
371 if (connector
->state
&& connector
->funcs
->atomic_destroy_state
)
372 connector
->funcs
->atomic_destroy_state(connector
,
375 mutex_destroy(&connector
->mutex
);
377 memset(connector
, 0, sizeof(*connector
));
379 EXPORT_SYMBOL(drm_connector_cleanup
);
382 * drm_connector_register - register a connector
383 * @connector: the connector to register
385 * Register userspace interfaces for a connector
388 * Zero on success, error code on failure.
390 int drm_connector_register(struct drm_connector
*connector
)
394 if (!connector
->dev
->registered
)
397 mutex_lock(&connector
->mutex
);
398 if (connector
->registered
)
401 ret
= drm_sysfs_connector_add(connector
);
405 ret
= drm_debugfs_connector_add(connector
);
410 if (connector
->funcs
->late_register
) {
411 ret
= connector
->funcs
->late_register(connector
);
416 drm_mode_object_register(connector
->dev
, &connector
->base
);
418 connector
->registered
= true;
422 drm_debugfs_connector_remove(connector
);
424 drm_sysfs_connector_remove(connector
);
426 mutex_unlock(&connector
->mutex
);
429 EXPORT_SYMBOL(drm_connector_register
);
432 * drm_connector_unregister - unregister a connector
433 * @connector: the connector to unregister
435 * Unregister userspace interfaces for a connector
437 void drm_connector_unregister(struct drm_connector
*connector
)
439 mutex_lock(&connector
->mutex
);
440 if (!connector
->registered
) {
441 mutex_unlock(&connector
->mutex
);
445 if (connector
->funcs
->early_unregister
)
446 connector
->funcs
->early_unregister(connector
);
448 drm_sysfs_connector_remove(connector
);
449 drm_debugfs_connector_remove(connector
);
451 connector
->registered
= false;
452 mutex_unlock(&connector
->mutex
);
454 EXPORT_SYMBOL(drm_connector_unregister
);
456 void drm_connector_unregister_all(struct drm_device
*dev
)
458 struct drm_connector
*connector
;
459 struct drm_connector_list_iter conn_iter
;
461 drm_connector_list_iter_begin(dev
, &conn_iter
);
462 drm_for_each_connector_iter(connector
, &conn_iter
)
463 drm_connector_unregister(connector
);
464 drm_connector_list_iter_end(&conn_iter
);
467 int drm_connector_register_all(struct drm_device
*dev
)
469 struct drm_connector
*connector
;
470 struct drm_connector_list_iter conn_iter
;
473 drm_connector_list_iter_begin(dev
, &conn_iter
);
474 drm_for_each_connector_iter(connector
, &conn_iter
) {
475 ret
= drm_connector_register(connector
);
479 drm_connector_list_iter_end(&conn_iter
);
482 drm_connector_unregister_all(dev
);
487 * drm_get_connector_status_name - return a string for connector status
488 * @status: connector status to compute name of
490 * In contrast to the other drm_get_*_name functions this one here returns a
491 * const pointer and hence is threadsafe.
493 const char *drm_get_connector_status_name(enum drm_connector_status status
)
495 if (status
== connector_status_connected
)
497 else if (status
== connector_status_disconnected
)
498 return "disconnected";
502 EXPORT_SYMBOL(drm_get_connector_status_name
);
505 * drm_get_connector_force_name - return a string for connector force
506 * @force: connector force to get name of
508 * Returns: const pointer to name.
510 const char *drm_get_connector_force_name(enum drm_connector_force force
)
513 case DRM_FORCE_UNSPECIFIED
:
514 return "unspecified";
519 case DRM_FORCE_ON_DIGITAL
:
526 #ifdef CONFIG_LOCKDEP
527 static struct lockdep_map connector_list_iter_dep_map
= {
528 .name
= "drm_connector_list_iter"
533 * drm_connector_list_iter_begin - initialize a connector_list iterator
535 * @iter: connector_list iterator
537 * Sets @iter up to walk the &drm_mode_config.connector_list of @dev. @iter
538 * must always be cleaned up again by calling drm_connector_list_iter_end().
539 * Iteration itself happens using drm_connector_list_iter_next() or
540 * drm_for_each_connector_iter().
542 void drm_connector_list_iter_begin(struct drm_device
*dev
,
543 struct drm_connector_list_iter
*iter
)
547 lock_acquire_shared_recursive(&connector_list_iter_dep_map
, 0, 1, NULL
, _RET_IP_
);
549 EXPORT_SYMBOL(drm_connector_list_iter_begin
);
552 * Extra-safe connector put function that works in any context. Should only be
553 * used from the connector_iter functions, where we never really expect to
554 * actually release the connector when dropping our final reference.
557 __drm_connector_put_safe(struct drm_connector
*conn
)
559 struct drm_mode_config
*config
= &conn
->dev
->mode_config
;
561 lockdep_assert_held(&config
->connector_list_lock
);
563 if (!refcount_dec_and_test(&conn
->base
.refcount
.refcount
))
566 llist_add(&conn
->free_node
, &config
->connector_free_list
);
567 schedule_work(&config
->connector_free_work
);
571 * drm_connector_list_iter_next - return next connector
572 * @iter: connectr_list iterator
574 * Returns the next connector for @iter, or NULL when the list walk has
577 struct drm_connector
*
578 drm_connector_list_iter_next(struct drm_connector_list_iter
*iter
)
580 struct drm_connector
*old_conn
= iter
->conn
;
581 struct drm_mode_config
*config
= &iter
->dev
->mode_config
;
582 struct list_head
*lhead
;
585 spin_lock_irqsave(&config
->connector_list_lock
, flags
);
586 lhead
= old_conn
? &old_conn
->head
: &config
->connector_list
;
589 if (lhead
->next
== &config
->connector_list
) {
595 iter
->conn
= list_entry(lhead
, struct drm_connector
, head
);
597 /* loop until it's not a zombie connector */
598 } while (!kref_get_unless_zero(&iter
->conn
->base
.refcount
));
601 __drm_connector_put_safe(old_conn
);
602 spin_unlock_irqrestore(&config
->connector_list_lock
, flags
);
606 EXPORT_SYMBOL(drm_connector_list_iter_next
);
609 * drm_connector_list_iter_end - tear down a connector_list iterator
610 * @iter: connector_list iterator
612 * Tears down @iter and releases any resources (like &drm_connector references)
613 * acquired while walking the list. This must always be called, both when the
614 * iteration completes fully or when it was aborted without walking the entire
617 void drm_connector_list_iter_end(struct drm_connector_list_iter
*iter
)
619 struct drm_mode_config
*config
= &iter
->dev
->mode_config
;
624 spin_lock_irqsave(&config
->connector_list_lock
, flags
);
625 __drm_connector_put_safe(iter
->conn
);
626 spin_unlock_irqrestore(&config
->connector_list_lock
, flags
);
628 lock_release(&connector_list_iter_dep_map
, 0, _RET_IP_
);
630 EXPORT_SYMBOL(drm_connector_list_iter_end
);
632 static const struct drm_prop_enum_list drm_subpixel_enum_list
[] = {
633 { SubPixelUnknown
, "Unknown" },
634 { SubPixelHorizontalRGB
, "Horizontal RGB" },
635 { SubPixelHorizontalBGR
, "Horizontal BGR" },
636 { SubPixelVerticalRGB
, "Vertical RGB" },
637 { SubPixelVerticalBGR
, "Vertical BGR" },
638 { SubPixelNone
, "None" },
642 * drm_get_subpixel_order_name - return a string for a given subpixel enum
643 * @order: enum of subpixel_order
645 * Note you could abuse this and return something out of bounds, but that
646 * would be a caller error. No unscrubbed user data should make it here.
648 const char *drm_get_subpixel_order_name(enum subpixel_order order
)
650 return drm_subpixel_enum_list
[order
].name
;
652 EXPORT_SYMBOL(drm_get_subpixel_order_name
);
654 static const struct drm_prop_enum_list drm_dpms_enum_list
[] = {
655 { DRM_MODE_DPMS_ON
, "On" },
656 { DRM_MODE_DPMS_STANDBY
, "Standby" },
657 { DRM_MODE_DPMS_SUSPEND
, "Suspend" },
658 { DRM_MODE_DPMS_OFF
, "Off" }
660 DRM_ENUM_NAME_FN(drm_get_dpms_name
, drm_dpms_enum_list
)
662 static const struct drm_prop_enum_list drm_link_status_enum_list
[] = {
663 { DRM_MODE_LINK_STATUS_GOOD
, "Good" },
664 { DRM_MODE_LINK_STATUS_BAD
, "Bad" },
668 * drm_display_info_set_bus_formats - set the supported bus formats
669 * @info: display info to store bus formats in
670 * @formats: array containing the supported bus formats
671 * @num_formats: the number of entries in the fmts array
673 * Store the supported bus formats in display info structure.
674 * See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
675 * a full list of available formats.
677 int drm_display_info_set_bus_formats(struct drm_display_info
*info
,
679 unsigned int num_formats
)
683 if (!formats
&& num_formats
)
686 if (formats
&& num_formats
) {
687 fmts
= kmemdup(formats
, sizeof(*formats
) * num_formats
,
693 kfree(info
->bus_formats
);
694 info
->bus_formats
= fmts
;
695 info
->num_bus_formats
= num_formats
;
699 EXPORT_SYMBOL(drm_display_info_set_bus_formats
);
701 /* Optional connector properties. */
702 static const struct drm_prop_enum_list drm_scaling_mode_enum_list
[] = {
703 { DRM_MODE_SCALE_NONE
, "None" },
704 { DRM_MODE_SCALE_FULLSCREEN
, "Full" },
705 { DRM_MODE_SCALE_CENTER
, "Center" },
706 { DRM_MODE_SCALE_ASPECT
, "Full aspect" },
709 static const struct drm_prop_enum_list drm_aspect_ratio_enum_list
[] = {
710 { DRM_MODE_PICTURE_ASPECT_NONE
, "Automatic" },
711 { DRM_MODE_PICTURE_ASPECT_4_3
, "4:3" },
712 { DRM_MODE_PICTURE_ASPECT_16_9
, "16:9" },
715 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list
[] = {
716 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
717 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
718 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
720 DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name
, drm_dvi_i_select_enum_list
)
722 static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list
[] = {
723 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
724 { DRM_MODE_SUBCONNECTOR_DVID
, "DVI-D" }, /* DVI-I */
725 { DRM_MODE_SUBCONNECTOR_DVIA
, "DVI-A" }, /* DVI-I */
727 DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name
,
728 drm_dvi_i_subconnector_enum_list
)
730 static const struct drm_prop_enum_list drm_tv_select_enum_list
[] = {
731 { DRM_MODE_SUBCONNECTOR_Automatic
, "Automatic" }, /* DVI-I and TV-out */
732 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
733 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
734 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
735 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
737 DRM_ENUM_NAME_FN(drm_get_tv_select_name
, drm_tv_select_enum_list
)
739 static const struct drm_prop_enum_list drm_tv_subconnector_enum_list
[] = {
740 { DRM_MODE_SUBCONNECTOR_Unknown
, "Unknown" }, /* DVI-I and TV-out */
741 { DRM_MODE_SUBCONNECTOR_Composite
, "Composite" }, /* TV-out */
742 { DRM_MODE_SUBCONNECTOR_SVIDEO
, "SVIDEO" }, /* TV-out */
743 { DRM_MODE_SUBCONNECTOR_Component
, "Component" }, /* TV-out */
744 { DRM_MODE_SUBCONNECTOR_SCART
, "SCART" }, /* TV-out */
746 DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name
,
747 drm_tv_subconnector_enum_list
)
750 * DOC: standard connector properties
752 * DRM connectors have a few standardized properties:
755 * Blob property which contains the current EDID read from the sink. This
756 * is useful to parse sink identification information like vendor, model
757 * and serial. Drivers should update this property by calling
758 * drm_mode_connector_update_edid_property(), usually after having parsed
759 * the EDID using drm_add_edid_modes(). Userspace cannot change this
762 * Legacy property for setting the power state of the connector. For atomic
763 * drivers this is only provided for backwards compatibility with existing
764 * drivers, it remaps to controlling the "ACTIVE" property on the CRTC the
765 * connector is linked to. Drivers should never set this property directly,
766 * it is handled by the DRM core by calling the &drm_connector_funcs.dpms
767 * callback. For atomic drivers the remapping to the "ACTIVE" property is
768 * implemented in the DRM core. This is the only standard connector
769 * property that userspace can change.
771 * Note that this property cannot be set through the MODE_ATOMIC ioctl,
772 * userspace must use "ACTIVE" on the CRTC instead.
776 * For userspace also running on legacy drivers the "DPMS" semantics are a
777 * lot more complicated. First, userspace cannot rely on the "DPMS" value
778 * returned by the GETCONNECTOR actually reflecting reality, because many
779 * drivers fail to update it. For atomic drivers this is taken care of in
780 * drm_atomic_helper_update_legacy_modeset_state().
782 * The second issue is that the DPMS state is only well-defined when the
783 * connector is connected to a CRTC. In atomic the DRM core enforces that
784 * "ACTIVE" is off in such a case, no such checks exists for "DPMS".
786 * Finally, when enabling an output using the legacy SETCONFIG ioctl then
787 * "DPMS" is forced to ON. But see above, that might not be reflected in
788 * the software value on legacy drivers.
790 * Summarizing: Only set "DPMS" when the connector is known to be enabled,
791 * assume that a successful SETCONFIG call also sets "DPMS" to on, and
792 * never read back the value of "DPMS" because it can be incorrect.
794 * Connector path property to identify how this sink is physically
795 * connected. Used by DP MST. This should be set by calling
796 * drm_mode_connector_set_path_property(), in the case of DP MST with the
797 * path property the MST manager created. Userspace cannot change this
800 * Connector tile group property to indicate how a set of DRM connector
801 * compose together into one logical screen. This is used by both high-res
802 * external screens (often only using a single cable, but exposing multiple
803 * DP MST sinks), or high-res integrated panels (like dual-link DSI) which
804 * are not gen-locked. Note that for tiled panels which are genlocked, like
805 * dual-link LVDS or dual-link DSI, the driver should try to not expose the
806 * tiling and virtualize both &drm_crtc and &drm_plane if needed. Drivers
807 * should update this value using drm_mode_connector_set_tile_property().
808 * Userspace cannot change this property.
810 * Connector link-status property to indicate the status of link. The default
811 * value of link-status is "GOOD". If something fails during or after modeset,
812 * the kernel driver may set this to "BAD" and issue a hotplug uevent. Drivers
813 * should update this value using drm_mode_connector_set_link_status_property().
815 * Indicates the output should be ignored for purposes of displaying a
816 * standard desktop environment or console. This is most likely because
817 * the output device is not rectilinear.
819 * Connectors also have one standardized atomic property:
822 * Mode object ID of the &drm_crtc this connector should be connected to.
825 int drm_connector_create_standard_properties(struct drm_device
*dev
)
827 struct drm_property
*prop
;
829 prop
= drm_property_create(dev
, DRM_MODE_PROP_BLOB
|
830 DRM_MODE_PROP_IMMUTABLE
,
834 dev
->mode_config
.edid_property
= prop
;
836 prop
= drm_property_create_enum(dev
, 0,
837 "DPMS", drm_dpms_enum_list
,
838 ARRAY_SIZE(drm_dpms_enum_list
));
841 dev
->mode_config
.dpms_property
= prop
;
843 prop
= drm_property_create(dev
,
845 DRM_MODE_PROP_IMMUTABLE
,
849 dev
->mode_config
.path_property
= prop
;
851 prop
= drm_property_create(dev
,
853 DRM_MODE_PROP_IMMUTABLE
,
857 dev
->mode_config
.tile_property
= prop
;
859 prop
= drm_property_create_enum(dev
, 0, "link-status",
860 drm_link_status_enum_list
,
861 ARRAY_SIZE(drm_link_status_enum_list
));
864 dev
->mode_config
.link_status_property
= prop
;
866 prop
= drm_property_create_bool(dev
, DRM_MODE_PROP_IMMUTABLE
, "non-desktop");
869 dev
->mode_config
.non_desktop_property
= prop
;
875 * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
878 * Called by a driver the first time a DVI-I connector is made.
880 int drm_mode_create_dvi_i_properties(struct drm_device
*dev
)
882 struct drm_property
*dvi_i_selector
;
883 struct drm_property
*dvi_i_subconnector
;
885 if (dev
->mode_config
.dvi_i_select_subconnector_property
)
889 drm_property_create_enum(dev
, 0,
890 "select subconnector",
891 drm_dvi_i_select_enum_list
,
892 ARRAY_SIZE(drm_dvi_i_select_enum_list
));
893 dev
->mode_config
.dvi_i_select_subconnector_property
= dvi_i_selector
;
895 dvi_i_subconnector
= drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
897 drm_dvi_i_subconnector_enum_list
,
898 ARRAY_SIZE(drm_dvi_i_subconnector_enum_list
));
899 dev
->mode_config
.dvi_i_subconnector_property
= dvi_i_subconnector
;
903 EXPORT_SYMBOL(drm_mode_create_dvi_i_properties
);
906 * drm_create_tv_properties - create TV specific connector properties
908 * @num_modes: number of different TV formats (modes) supported
909 * @modes: array of pointers to strings containing name of each format
911 * Called by a driver's TV initialization routine, this function creates
912 * the TV specific connector properties for a given device. Caller is
913 * responsible for allocating a list of format names and passing them to
916 int drm_mode_create_tv_properties(struct drm_device
*dev
,
917 unsigned int num_modes
,
918 const char * const modes
[])
920 struct drm_property
*tv_selector
;
921 struct drm_property
*tv_subconnector
;
924 if (dev
->mode_config
.tv_select_subconnector_property
)
928 * Basic connector properties
930 tv_selector
= drm_property_create_enum(dev
, 0,
931 "select subconnector",
932 drm_tv_select_enum_list
,
933 ARRAY_SIZE(drm_tv_select_enum_list
));
937 dev
->mode_config
.tv_select_subconnector_property
= tv_selector
;
940 drm_property_create_enum(dev
, DRM_MODE_PROP_IMMUTABLE
,
942 drm_tv_subconnector_enum_list
,
943 ARRAY_SIZE(drm_tv_subconnector_enum_list
));
944 if (!tv_subconnector
)
946 dev
->mode_config
.tv_subconnector_property
= tv_subconnector
;
949 * Other, TV specific properties: margins & TV modes.
951 dev
->mode_config
.tv_left_margin_property
=
952 drm_property_create_range(dev
, 0, "left margin", 0, 100);
953 if (!dev
->mode_config
.tv_left_margin_property
)
956 dev
->mode_config
.tv_right_margin_property
=
957 drm_property_create_range(dev
, 0, "right margin", 0, 100);
958 if (!dev
->mode_config
.tv_right_margin_property
)
961 dev
->mode_config
.tv_top_margin_property
=
962 drm_property_create_range(dev
, 0, "top margin", 0, 100);
963 if (!dev
->mode_config
.tv_top_margin_property
)
966 dev
->mode_config
.tv_bottom_margin_property
=
967 drm_property_create_range(dev
, 0, "bottom margin", 0, 100);
968 if (!dev
->mode_config
.tv_bottom_margin_property
)
971 dev
->mode_config
.tv_mode_property
=
972 drm_property_create(dev
, DRM_MODE_PROP_ENUM
,
974 if (!dev
->mode_config
.tv_mode_property
)
977 for (i
= 0; i
< num_modes
; i
++)
978 drm_property_add_enum(dev
->mode_config
.tv_mode_property
, i
,
981 dev
->mode_config
.tv_brightness_property
=
982 drm_property_create_range(dev
, 0, "brightness", 0, 100);
983 if (!dev
->mode_config
.tv_brightness_property
)
986 dev
->mode_config
.tv_contrast_property
=
987 drm_property_create_range(dev
, 0, "contrast", 0, 100);
988 if (!dev
->mode_config
.tv_contrast_property
)
991 dev
->mode_config
.tv_flicker_reduction_property
=
992 drm_property_create_range(dev
, 0, "flicker reduction", 0, 100);
993 if (!dev
->mode_config
.tv_flicker_reduction_property
)
996 dev
->mode_config
.tv_overscan_property
=
997 drm_property_create_range(dev
, 0, "overscan", 0, 100);
998 if (!dev
->mode_config
.tv_overscan_property
)
1001 dev
->mode_config
.tv_saturation_property
=
1002 drm_property_create_range(dev
, 0, "saturation", 0, 100);
1003 if (!dev
->mode_config
.tv_saturation_property
)
1006 dev
->mode_config
.tv_hue_property
=
1007 drm_property_create_range(dev
, 0, "hue", 0, 100);
1008 if (!dev
->mode_config
.tv_hue_property
)
1015 EXPORT_SYMBOL(drm_mode_create_tv_properties
);
1018 * drm_mode_create_scaling_mode_property - create scaling mode property
1021 * Called by a driver the first time it's needed, must be attached to desired
1024 * Atomic drivers should use drm_connector_attach_scaling_mode_property()
1025 * instead to correctly assign &drm_connector_state.picture_aspect_ratio
1026 * in the atomic state.
1028 int drm_mode_create_scaling_mode_property(struct drm_device
*dev
)
1030 struct drm_property
*scaling_mode
;
1032 if (dev
->mode_config
.scaling_mode_property
)
1036 drm_property_create_enum(dev
, 0, "scaling mode",
1037 drm_scaling_mode_enum_list
,
1038 ARRAY_SIZE(drm_scaling_mode_enum_list
));
1040 dev
->mode_config
.scaling_mode_property
= scaling_mode
;
1044 EXPORT_SYMBOL(drm_mode_create_scaling_mode_property
);
1047 * drm_connector_attach_scaling_mode_property - attach atomic scaling mode property
1048 * @connector: connector to attach scaling mode property on.
1049 * @scaling_mode_mask: or'ed mask of BIT(%DRM_MODE_SCALE_\*).
1051 * This is used to add support for scaling mode to atomic drivers.
1052 * The scaling mode will be set to &drm_connector_state.picture_aspect_ratio
1053 * and can be used from &drm_connector_helper_funcs->atomic_check for validation.
1055 * This is the atomic version of drm_mode_create_scaling_mode_property().
1058 * Zero on success, negative errno on failure.
1060 int drm_connector_attach_scaling_mode_property(struct drm_connector
*connector
,
1061 u32 scaling_mode_mask
)
1063 struct drm_device
*dev
= connector
->dev
;
1064 struct drm_property
*scaling_mode_property
;
1066 const unsigned valid_scaling_mode_mask
=
1067 (1U << ARRAY_SIZE(drm_scaling_mode_enum_list
)) - 1;
1069 if (WARN_ON(hweight32(scaling_mode_mask
) < 2 ||
1070 scaling_mode_mask
& ~valid_scaling_mode_mask
))
1073 scaling_mode_property
=
1074 drm_property_create(dev
, DRM_MODE_PROP_ENUM
, "scaling mode",
1075 hweight32(scaling_mode_mask
));
1077 if (!scaling_mode_property
)
1080 for (i
= 0; i
< ARRAY_SIZE(drm_scaling_mode_enum_list
); i
++) {
1083 if (!(BIT(i
) & scaling_mode_mask
))
1086 ret
= drm_property_add_enum(scaling_mode_property
, j
++,
1087 drm_scaling_mode_enum_list
[i
].type
,
1088 drm_scaling_mode_enum_list
[i
].name
);
1091 drm_property_destroy(dev
, scaling_mode_property
);
1097 drm_object_attach_property(&connector
->base
,
1098 scaling_mode_property
, 0);
1100 connector
->scaling_mode_property
= scaling_mode_property
;
1104 EXPORT_SYMBOL(drm_connector_attach_scaling_mode_property
);
1107 * drm_mode_create_aspect_ratio_property - create aspect ratio property
1110 * Called by a driver the first time it's needed, must be attached to desired
1114 * Zero on success, negative errno on failure.
1116 int drm_mode_create_aspect_ratio_property(struct drm_device
*dev
)
1118 if (dev
->mode_config
.aspect_ratio_property
)
1121 dev
->mode_config
.aspect_ratio_property
=
1122 drm_property_create_enum(dev
, 0, "aspect ratio",
1123 drm_aspect_ratio_enum_list
,
1124 ARRAY_SIZE(drm_aspect_ratio_enum_list
));
1126 if (dev
->mode_config
.aspect_ratio_property
== NULL
)
1131 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property
);
1134 * drm_mode_create_suggested_offset_properties - create suggests offset properties
1137 * Create the the suggested x/y offset property for connectors.
1139 int drm_mode_create_suggested_offset_properties(struct drm_device
*dev
)
1141 if (dev
->mode_config
.suggested_x_property
&& dev
->mode_config
.suggested_y_property
)
1144 dev
->mode_config
.suggested_x_property
=
1145 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested X", 0, 0xffffffff);
1147 dev
->mode_config
.suggested_y_property
=
1148 drm_property_create_range(dev
, DRM_MODE_PROP_IMMUTABLE
, "suggested Y", 0, 0xffffffff);
1150 if (dev
->mode_config
.suggested_x_property
== NULL
||
1151 dev
->mode_config
.suggested_y_property
== NULL
)
1155 EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties
);
1158 * drm_mode_connector_set_path_property - set tile property on connector
1159 * @connector: connector to set property on.
1160 * @path: path to use for property; must not be NULL.
1162 * This creates a property to expose to userspace to specify a
1163 * connector path. This is mainly used for DisplayPort MST where
1164 * connectors have a topology and we want to allow userspace to give
1165 * them more meaningful names.
1168 * Zero on success, negative errno on failure.
1170 int drm_mode_connector_set_path_property(struct drm_connector
*connector
,
1173 struct drm_device
*dev
= connector
->dev
;
1176 ret
= drm_property_replace_global_blob(dev
,
1177 &connector
->path_blob_ptr
,
1181 dev
->mode_config
.path_property
);
1184 EXPORT_SYMBOL(drm_mode_connector_set_path_property
);
1187 * drm_mode_connector_set_tile_property - set tile property on connector
1188 * @connector: connector to set property on.
1190 * This looks up the tile information for a connector, and creates a
1191 * property for userspace to parse if it exists. The property is of
1192 * the form of 8 integers using ':' as a separator.
1195 * Zero on success, errno on failure.
1197 int drm_mode_connector_set_tile_property(struct drm_connector
*connector
)
1199 struct drm_device
*dev
= connector
->dev
;
1203 if (!connector
->has_tile
) {
1204 ret
= drm_property_replace_global_blob(dev
,
1205 &connector
->tile_blob_ptr
,
1209 dev
->mode_config
.tile_property
);
1213 snprintf(tile
, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
1214 connector
->tile_group
->id
, connector
->tile_is_single_monitor
,
1215 connector
->num_h_tile
, connector
->num_v_tile
,
1216 connector
->tile_h_loc
, connector
->tile_v_loc
,
1217 connector
->tile_h_size
, connector
->tile_v_size
);
1219 ret
= drm_property_replace_global_blob(dev
,
1220 &connector
->tile_blob_ptr
,
1224 dev
->mode_config
.tile_property
);
1227 EXPORT_SYMBOL(drm_mode_connector_set_tile_property
);
1230 * drm_mode_connector_update_edid_property - update the edid property of a connector
1231 * @connector: drm connector
1232 * @edid: new value of the edid property
1234 * This function creates a new blob modeset object and assigns its id to the
1235 * connector's edid property.
1238 * Zero on success, negative errno on failure.
1240 int drm_mode_connector_update_edid_property(struct drm_connector
*connector
,
1241 const struct edid
*edid
)
1243 struct drm_device
*dev
= connector
->dev
;
1247 /* ignore requests to set edid when overridden */
1248 if (connector
->override_edid
)
1252 size
= EDID_LENGTH
* (1 + edid
->extensions
);
1254 /* Set the display info, using edid if available, otherwise
1255 * reseting the values to defaults. This duplicates the work
1256 * done in drm_add_edid_modes, but that function is not
1257 * consistently called before this one in all drivers and the
1258 * computation is cheap enough that it seems better to
1259 * duplicate it rather than attempt to ensure some arbitrary
1260 * ordering of calls.
1263 drm_add_display_info(connector
, edid
);
1265 drm_reset_display_info(connector
);
1267 drm_object_property_set_value(&connector
->base
,
1268 dev
->mode_config
.non_desktop_property
,
1269 connector
->display_info
.non_desktop
);
1271 ret
= drm_property_replace_global_blob(dev
,
1272 &connector
->edid_blob_ptr
,
1276 dev
->mode_config
.edid_property
);
1279 EXPORT_SYMBOL(drm_mode_connector_update_edid_property
);
1282 * drm_mode_connector_set_link_status_property - Set link status property of a connector
1283 * @connector: drm connector
1284 * @link_status: new value of link status property (0: Good, 1: Bad)
1286 * In usual working scenario, this link status property will always be set to
1287 * "GOOD". If something fails during or after a mode set, the kernel driver
1288 * may set this link status property to "BAD". The caller then needs to send a
1289 * hotplug uevent for userspace to re-check the valid modes through
1290 * GET_CONNECTOR_IOCTL and retry modeset.
1292 * Note: Drivers cannot rely on userspace to support this property and
1293 * issue a modeset. As such, they may choose to handle issues (like
1294 * re-training a link) without userspace's intervention.
1296 * The reason for adding this property is to handle link training failures, but
1297 * it is not limited to DP or link training. For example, if we implement
1298 * asynchronous setcrtc, this property can be used to report any failures in that.
1300 void drm_mode_connector_set_link_status_property(struct drm_connector
*connector
,
1301 uint64_t link_status
)
1303 struct drm_device
*dev
= connector
->dev
;
1305 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
1306 connector
->state
->link_status
= link_status
;
1307 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
1309 EXPORT_SYMBOL(drm_mode_connector_set_link_status_property
);
1311 int drm_mode_connector_set_obj_prop(struct drm_mode_object
*obj
,
1312 struct drm_property
*property
,
1316 struct drm_connector
*connector
= obj_to_connector(obj
);
1318 /* Do DPMS ourselves */
1319 if (property
== connector
->dev
->mode_config
.dpms_property
) {
1320 ret
= (*connector
->funcs
->dpms
)(connector
, (int)value
);
1321 } else if (connector
->funcs
->set_property
)
1322 ret
= connector
->funcs
->set_property(connector
, property
, value
);
1325 drm_object_property_set_value(&connector
->base
, property
, value
);
1329 int drm_mode_connector_property_set_ioctl(struct drm_device
*dev
,
1330 void *data
, struct drm_file
*file_priv
)
1332 struct drm_mode_connector_set_property
*conn_set_prop
= data
;
1333 struct drm_mode_obj_set_property obj_set_prop
= {
1334 .value
= conn_set_prop
->value
,
1335 .prop_id
= conn_set_prop
->prop_id
,
1336 .obj_id
= conn_set_prop
->connector_id
,
1337 .obj_type
= DRM_MODE_OBJECT_CONNECTOR
1340 /* It does all the locking and checking we need */
1341 return drm_mode_obj_set_property_ioctl(dev
, &obj_set_prop
, file_priv
);
1344 static struct drm_encoder
*drm_connector_get_encoder(struct drm_connector
*connector
)
1346 /* For atomic drivers only state objects are synchronously updated and
1347 * protected by modeset locks, so check those first. */
1348 if (connector
->state
)
1349 return connector
->state
->best_encoder
;
1350 return connector
->encoder
;
1353 static bool drm_mode_expose_to_userspace(const struct drm_display_mode
*mode
,
1354 const struct drm_file
*file_priv
)
1357 * If user-space hasn't configured the driver to expose the stereo 3D
1358 * modes, don't expose them.
1360 if (!file_priv
->stereo_allowed
&& drm_mode_is_stereo(mode
))
1366 int drm_mode_getconnector(struct drm_device
*dev
, void *data
,
1367 struct drm_file
*file_priv
)
1369 struct drm_mode_get_connector
*out_resp
= data
;
1370 struct drm_connector
*connector
;
1371 struct drm_encoder
*encoder
;
1372 struct drm_display_mode
*mode
;
1374 int encoders_count
= 0;
1378 struct drm_mode_modeinfo u_mode
;
1379 struct drm_mode_modeinfo __user
*mode_ptr
;
1380 uint32_t __user
*encoder_ptr
;
1382 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
1385 memset(&u_mode
, 0, sizeof(struct drm_mode_modeinfo
));
1387 connector
= drm_connector_lookup(dev
, file_priv
, out_resp
->connector_id
);
1391 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++)
1392 if (connector
->encoder_ids
[i
] != 0)
1395 if ((out_resp
->count_encoders
>= encoders_count
) && encoders_count
) {
1397 encoder_ptr
= (uint32_t __user
*)(unsigned long)(out_resp
->encoders_ptr
);
1398 for (i
= 0; i
< DRM_CONNECTOR_MAX_ENCODER
; i
++) {
1399 if (connector
->encoder_ids
[i
] != 0) {
1400 if (put_user(connector
->encoder_ids
[i
],
1401 encoder_ptr
+ copied
)) {
1409 out_resp
->count_encoders
= encoders_count
;
1411 out_resp
->connector_id
= connector
->base
.id
;
1412 out_resp
->connector_type
= connector
->connector_type
;
1413 out_resp
->connector_type_id
= connector
->connector_type_id
;
1415 mutex_lock(&dev
->mode_config
.mutex
);
1416 if (out_resp
->count_modes
== 0) {
1417 connector
->funcs
->fill_modes(connector
,
1418 dev
->mode_config
.max_width
,
1419 dev
->mode_config
.max_height
);
1422 out_resp
->mm_width
= connector
->display_info
.width_mm
;
1423 out_resp
->mm_height
= connector
->display_info
.height_mm
;
1424 out_resp
->subpixel
= connector
->display_info
.subpixel_order
;
1425 out_resp
->connection
= connector
->status
;
1427 /* delayed so we get modes regardless of pre-fill_modes state */
1428 list_for_each_entry(mode
, &connector
->modes
, head
)
1429 if (drm_mode_expose_to_userspace(mode
, file_priv
))
1433 * This ioctl is called twice, once to determine how much space is
1434 * needed, and the 2nd time to fill it.
1436 if ((out_resp
->count_modes
>= mode_count
) && mode_count
) {
1438 mode_ptr
= (struct drm_mode_modeinfo __user
*)(unsigned long)out_resp
->modes_ptr
;
1439 list_for_each_entry(mode
, &connector
->modes
, head
) {
1440 if (!drm_mode_expose_to_userspace(mode
, file_priv
))
1443 drm_mode_convert_to_umode(&u_mode
, mode
);
1444 if (copy_to_user(mode_ptr
+ copied
,
1445 &u_mode
, sizeof(u_mode
))) {
1447 mutex_unlock(&dev
->mode_config
.mutex
);
1454 out_resp
->count_modes
= mode_count
;
1455 mutex_unlock(&dev
->mode_config
.mutex
);
1457 drm_modeset_lock(&dev
->mode_config
.connection_mutex
, NULL
);
1458 encoder
= drm_connector_get_encoder(connector
);
1460 out_resp
->encoder_id
= encoder
->base
.id
;
1462 out_resp
->encoder_id
= 0;
1464 /* Only grab properties after probing, to make sure EDID and other
1465 * properties reflect the latest status. */
1466 ret
= drm_mode_object_get_properties(&connector
->base
, file_priv
->atomic
,
1467 (uint32_t __user
*)(unsigned long)(out_resp
->props_ptr
),
1468 (uint64_t __user
*)(unsigned long)(out_resp
->prop_values_ptr
),
1469 &out_resp
->count_props
);
1470 drm_modeset_unlock(&dev
->mode_config
.connection_mutex
);
1473 drm_connector_put(connector
);
1482 * Tile groups are used to represent tiled monitors with a unique integer
1483 * identifier. Tiled monitors using DisplayID v1.3 have a unique 8-byte handle,
1484 * we store this in a tile group, so we have a common identifier for all tiles
1485 * in a monitor group. The property is called "TILE". Drivers can manage tile
1486 * groups using drm_mode_create_tile_group(), drm_mode_put_tile_group() and
1487 * drm_mode_get_tile_group(). But this is only needed for internal panels where
1488 * the tile group information is exposed through a non-standard way.
1491 static void drm_tile_group_free(struct kref
*kref
)
1493 struct drm_tile_group
*tg
= container_of(kref
, struct drm_tile_group
, refcount
);
1494 struct drm_device
*dev
= tg
->dev
;
1495 mutex_lock(&dev
->mode_config
.idr_mutex
);
1496 idr_remove(&dev
->mode_config
.tile_idr
, tg
->id
);
1497 mutex_unlock(&dev
->mode_config
.idr_mutex
);
1502 * drm_mode_put_tile_group - drop a reference to a tile group.
1504 * @tg: tile group to drop reference to.
1506 * drop reference to tile group and free if 0.
1508 void drm_mode_put_tile_group(struct drm_device
*dev
,
1509 struct drm_tile_group
*tg
)
1511 kref_put(&tg
->refcount
, drm_tile_group_free
);
1513 EXPORT_SYMBOL(drm_mode_put_tile_group
);
1516 * drm_mode_get_tile_group - get a reference to an existing tile group
1518 * @topology: 8-bytes unique per monitor.
1520 * Use the unique bytes to get a reference to an existing tile group.
1523 * tile group or NULL if not found.
1525 struct drm_tile_group
*drm_mode_get_tile_group(struct drm_device
*dev
,
1528 struct drm_tile_group
*tg
;
1530 mutex_lock(&dev
->mode_config
.idr_mutex
);
1531 idr_for_each_entry(&dev
->mode_config
.tile_idr
, tg
, id
) {
1532 if (!memcmp(tg
->group_data
, topology
, 8)) {
1533 if (!kref_get_unless_zero(&tg
->refcount
))
1535 mutex_unlock(&dev
->mode_config
.idr_mutex
);
1539 mutex_unlock(&dev
->mode_config
.idr_mutex
);
1542 EXPORT_SYMBOL(drm_mode_get_tile_group
);
1545 * drm_mode_create_tile_group - create a tile group from a displayid description
1547 * @topology: 8-bytes unique per monitor.
1549 * Create a tile group for the unique monitor, and get a unique
1550 * identifier for the tile group.
1553 * new tile group or error.
1555 struct drm_tile_group
*drm_mode_create_tile_group(struct drm_device
*dev
,
1558 struct drm_tile_group
*tg
;
1561 tg
= kzalloc(sizeof(*tg
), GFP_KERNEL
);
1563 return ERR_PTR(-ENOMEM
);
1565 kref_init(&tg
->refcount
);
1566 memcpy(tg
->group_data
, topology
, 8);
1569 mutex_lock(&dev
->mode_config
.idr_mutex
);
1570 ret
= idr_alloc(&dev
->mode_config
.tile_idr
, tg
, 1, 0, GFP_KERNEL
);
1578 mutex_unlock(&dev
->mode_config
.idr_mutex
);
1581 EXPORT_SYMBOL(drm_mode_create_tile_group
);
1584 * drm_connector_update_edid_property - update the edid property of a connector
1585 * @connector: drm connector
1586 * @edid: new value of the edid property
1588 * This function creates a new blob modeset object and assigns its id to the
1589 * connector's edid property.
1592 * Zero on success, negative errno on failure.
1594 int drm_connector_update_edid_property(struct drm_connector
*connector
,
1595 const struct edid
*edid
)
1597 struct drm_device
*dev
= connector
->dev
;
1601 /* ignore requests to set edid when overridden */
1602 if (connector
->override_edid
)
1606 size
= EDID_LENGTH
* (1 + edid
->extensions
);
1608 /* Set the display info, using edid if available, otherwise
1609 * reseting the values to defaults. This duplicates the work
1610 * done in drm_add_edid_modes, but that function is not
1611 * consistently called before this one in all drivers and the
1612 * computation is cheap enough that it seems better to
1613 * duplicate it rather than attempt to ensure some arbitrary
1614 * ordering of calls.
1617 drm_add_display_info(connector
, edid
);
1619 drm_reset_display_info(connector
);
1621 drm_object_property_set_value(&connector
->base
,
1622 dev
->mode_config
.non_desktop_property
,
1623 connector
->display_info
.non_desktop
);
1625 ret
= drm_property_replace_global_blob(dev
,
1626 &connector
->edid_blob_ptr
,
1630 dev
->mode_config
.edid_property
);
1633 EXPORT_SYMBOL(drm_connector_update_edid_property
);